Jar cap



FIG. 1 is an elevational view of a jar cap showing my new design;

FIG. 2 is an elevational view showing the side opposite that seen in FIG. 1;

FIG. 3 is an elevational view looking from the left of FIG. 1;

FIG. 4 is an elevational view looking from the right of FIG. 1;

FIG. 5 is a top plan view; and

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a jar cap, as shown and described. 